Hello again,
How can I determine $cctid for specific rbd name? Or is there any good way to map admin-socket with rbd?
Regards
Mateusz
From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Mateusz Skala (UST, POL)
Sent: Tuesday, July 24, 2018 9:49 AM
To: dillaman@xxxxxxxxxx
Cc: ceph-users@xxxxxxxxxxxxxx
Subject: [Possibly Forged Email] Re: Read/write statistics per RBD image
Thank You for help, it is exactly that I need.
Regards
Mateusz
From: Jason Dillaman [mailto:jdillama@xxxxxxxxxx]
Sent: Wednesday, July 18, 2018 1:28 PM
To: Mateusz Skala (UST, POL) <Mateusz.Skala@xxxxxxxxxxxxxx>
Cc: dillaman <dillaman@xxxxxxxxxx>; ceph-users <ceph-users@xxxxxxxxxxxxxx>
Subject: Re: Read/write statistics per RBD image
Yup, on the host running librbd, you just need to enable the "admin socket" in your ceph.conf and then use "ceph --admin-daemon /path/to/image/admin/socket.asok perf dump" (i.e. not "ceph perf dump").
See the example in this tip window [1] for how to configure for a "libvirt" CephX user.
On Wed, Jul 18, 2018 at 4:02 AM Mateusz Skala (UST, POL) <Mateusz.Skala@xxxxxxxxxxxxxx> wrote:
Thanks for response.
In ‘ceph perf dump’ there is no statistics for read/write operations on specific RBD image, only for osd and total client operations. I need to get statistics on one specific RBD image, to get top used images. It is possible?
Regards
Mateusz
From: Jason Dillaman [mailto:jdillama@xxxxxxxxxx]
Sent: Tuesday, July 17, 2018 3:29 PM
To: Mateusz Skala (UST, POL) <Mateusz.Skala@xxxxxxxxxxxxxx>
Cc: ceph-users <ceph-users@xxxxxxxxxxxxxx>
Subject: Re: Read/write statistics per RBD image
Yes, you just need to enable the "admin socket" in your ceph.conf and then use "ceph --admin-daemon /path/to/image/admin/socket.asok perf dump".
On Tue, Jul 17, 2018 at 8:53 AM Mateusz Skala (UST, POL) <Mateusz.Skala@xxxxxxxxxxxxxx> wrote:
Hi,
It is possible to get statistics of issued reads/writes to specific RBD image? Best will be statistics like in /proc/diskstats in linux.
Regards
Mateusz
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Jason
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Jason
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